Italtherm CITY BASIC - Maximum Heating Power Adjustment (Continued)

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• when the display shows “PO” ashing, within 15 seconds turn the Summer/Winter knob on
the MAXIMUM value of the scale of the heang
(fully clockwise). The service indicaon ap-
pears on the display and the burner ignites to the maximum output not modulated (the YELLOW
indicator turns on);
• read on the micromanometer the value of the gas pressure to the burner and turn the Summer/
Winter
knob along the heang system temperature scale , unl you read, on the microman-
ometer, the burner pressure corresponding to the power needed; the display will show a ashing
number from 00 to 99 indicang the new set point;
Remark: the value from 00 to 99 that appears on the display during the seng, is foreseen to be read
at the end of the adjustment and to be eventually re-used as a quick reference to set the boiler
again to the same heang power. To set the power the rst me, make exclusively reference to the
burner pressure measured by the micromanometer.
• do NOT move the Summer/Winter
knob for about 30 seconds, unl the number on the dis-
play stops ashing (also the  indicator stops ashing and stays on). During this me, check
 on the correct value. If further
pressure adjustment should be needed, turn the knob and wait again 30 seconds and the end of
ashing;
• to conrm and save the seng, turn the Hot Water knob on the scale ; the burner will
turn o for a moment. Wait (about 5 seconds) that both the  and RED indicators stay on
for about 5 seconds (this is the conrmaon that the burner pressure for heang is stored), then
the RED indicator turns o;
 screw the pressure tapping point screw for gas outlet 1; verify that there is no gas leak.
 To switch o the burner, turn the Summer/Winter knob
to the posion.
The MAX power for the heang system is adjusted now.
The whole procedure should be completed within 15 minutes from the start. If you exceed this me, or
in case of mistakes, the new pressure will not be stored and it will be necessary to repeat the procedure
from the beginning, by turning the Summer/Winter knob
on and the Hot Water knob on
the scale
.